Heater.



'PATENTED APR. 7, 1903 A. scfifiTT;

HEATER.

APPLICATION FILED APR. 12, 1902.

K0 MODEL.

INVENTDR ALFRED 50/1/77 BYfih'M WITNEEEEE: a

ATTDRNEYS I m: 'nenma PEYEFS 00.. wow-U010 wswmotcu. u. c.

UNITED STATES PATENT OFFICE.

ALFRED SCI-IUTT, OF OHARLOT'IENBURG, GERMAN Y.

HEATER.

SPECIFICATION forming part of Letters Patent NO. 724,511, dated April 7,1903.

Application filed April 12, 1902.

To all whom it may concern:

Be it known that I, ALFRED Sonii'rr, mechanical engineer, a subject ofthe Emperor of Germany, and a resident of No. 19 Pestalozzi street,Oharlottenburg, in the Kingdom of Prussia and Empire of Germany, havein: vented certain new and useful Improvements. in Heaters, of which thefollowing is a specification.

The present invention relates to' an improved construction ofavaporizer, by means of which smallest possible quantities of liquid maybe spread over the largest possible heating-surface. As a matter of factit may be stated here that efforts have been made to solve this problemby evaporating liquids in a pipe, as in the case of Serpollet; but suchforms of execution are suffering from the drawback that in so narrow aspace the de-- velopment of steam cannot take place'in a uniform andquiet manner. Now the present invention is adapted to solve this task inquite satisfactorya manner by creatinga construction which combines theadvantage of vaporizing the fluid spread outin a very thin layer(irrigation) with the advantages granted by an ordinary large-surfacesteam-boiler.

In the accompanying drawings, Figurel is a vertical section of theentire irrigationevaporator. Fig. 2 is a vertical section of aheating-tube in same, and'Fig. 3 a top view of said heating-tube. v

Similar letters refer to similar parts throughout the several views.

In the represented form of execution, a is a cylindrical verticalboiler, and b b its bottoms or ends, between which tubes kare spannedforinstance, strongly rolled in. The bottoms are provided with domes c andc, the lower one, o, of which is divided into two parts by a partitionZ. The steam or hot gas intended for heating the device enters from thesocket d, passes'through the tubes 7c,-situated at the left-hand side ofthe partition Z, in a perpendicular direction from bottom to top, thencein the opposite direction through the tubes 70, situated at theright-hand side of the partition Z, and escapes through the socket e.The fluid to be evaporated comes from outside the tubes and is designedto run down along the tubes and to evaporate at the same Serial No.102,578. (No model.)

time. For such purpose the boiler is pro- .vided with horizontalpartitions or bottoms over the top partition f, and runs down along ythe tubes 76. Those parts of the liquid which,

in the case of the boiler being considerably strained, fall down freelyinstead of running down along the tubes will reach the second partitionf of the boiler of exactly the same arrangement as the first one, whenthey will be compelled to go onrunningdown. If the size of the boiler beproportionate to the effect it is to take, the whole of the liquid willbe vaporized before it reaches the last partition; otherwise any notvaporized quantity of liquid will accumulate on said last bottom, fromwhere it may be drained oif through the socket h. The steam or vapormaybe taken off in .difierent manners, preferably, however, through acollecting-pipe i, which tightly passes through all the bottoms f f fand whose parts contained between two successive bottoms are perforatedfor the purpose of permitting the steam produced by the evaporatingliquid to get, as shown by the arrows, into the collecting-pipe i,whence they may be drawn ofi and led upward.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. A heater comprising a boiler or shell, with upright heating-tubestherein, while the space surrounding said tubes forms a chamber whichcontains a fluid to bevaporized and the vapor produced therefrom, ahorizontal partition located within the shell and having aperturesthrough which the fluid may pass from one side of the partition to theother, and an upright collectingpipe which extends through the saidpartition and has vapor-receiving apertures both above and ICO 2 wantbelow said partition, the upper end of said the fluid to be vaporizedmay pass from above collecting-pipe extending through the top of thepartition to below the same, and the shell the shell to the outsidethereof. being provided above said partition with an 2. A heatercomprising a boiler or shell inlet for the fluid to be vaporized. 15

5 with upright heating-tubes therein, a collect- -In witness whereof Ihave hereunto signed ing-pipe extending within the boiler and promyname, this 29th day of March, 1902, in

vided with an imperforate portion at the top, I presence of twosubscribing witnesses.

and with an apertnred lower portion, and a partition located within theshell at the im- Witnesses: I perforate portion of the collecting-pipe,said HENRY HASPER,

partition having apertures through which l ALFRED SOHUTT.

WOLDEMAR HAUPT.

